create merged specs

Author: dtayeh

specs/open-api-merge.json

@@ -0,0 +1,11 @@
+{
+  "inputs": [
+    {
+      "inputFile": "./rapid_specs.yaml"
+    },
+    {
+      "inputFile": "./travelads_specs.yaml"
+    }
+  ],
+  "output": "./specs.yaml"
+}